plutonic

Meanings

1. 1
   adj

   of igneous rock formed when magma cools and solidifies deep below the earth's surface

   Slow cooling gave the plutonic rock its large, visible crystals.

2. 2
   adj

   of or associated with Pluto or the underworld; dark or infernal

   The poem imagines plutonic fires burning beneath the mountain.

From Greek Plouton, the name of Pluto, god of the underworld, + -ic. Plouton is related to ploutos ("wealth"), an allusion to riches beneath the ground. The geological sense likewise refers to rock formed in the earth's interior.

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